Center for Nuclear Technology Assessment - BATAN
Email: igndjoko@batan.go.id
ABSTRACT
FEEDBACK CONTROL SYSTEM ANALYSIS FOR PIUS TYPE REACTOR USING RELAP5/MOD2. A reactor concept such as Process Inherent Ultimate Safety (PIUS) is a modification of Pressurized Water Reactor (PWR) in which the primary coolant system is submerged in a pool of poison water. Operating principle of this reactor is to maintain the pressure balance along the density lock which be a connection between the primary coolant system and the pool, so that no inflow through density lock. The pressure balance could be maintaned by controlling the primary pump speed using feedback control system. This feedback control system was simulated by experimental using thermal hydraulic test loop and by numerical simulation using RELAP5/MOD2. Numerical simulation is done by setting the thermal hydraulic test loop nodalization based on RELAP5/MOD2 norm input. The system nodalization is composed of 119 volumes, 127 junctions, and 106 heat structures. Analysis is carried out based on the result of experimental and numerical simulation. The two simulations gave some particularly parameters such as the primary pump speed, the primary flow rate, the poison water flow rate, and the primary coolant temperatures. Conclusion from the two simulation results, that is, feedback control system to the primary pump speed could be introduced to the operation of the PIUS reactor.
Keywords : Feedback Control System, PIUS type Reactor, Primary Pump Speed, RELAP5/MOD2, Pressure Balance, Numerical Simulation, Density Lock.
Published : Proceeding "Seminar Sains dan Teknologi Nuklir, Peningkatan Keselamatan Reaktor Triga Mark II Bandung", Bandung, 19-20 Maret 1997, ISSN No. : 1410-1769
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